DETAILS

• Minimum roof pitch recommended is 4/12
  
• Can be laid on roofs with rafters spaced to 3 ft. (without plywood) subject to local authority approval
  
• Ceramic slate weight with nu-lok weighs 5.6 lbs. Per sq.
  
• Natural Vermont slate weight with nu-lok weighs between 5-6 lbs. (Depending on slate selected)
  (Weights may very depending on underlayment)
  
• Batten: this is the main batten that is used throughout the systems. It runs horizontally and supports the Link Channel.
  
• Link Channel: The Link Channels sit under each tile joint and conduct any water seepage between tiles to the tile below making a horizontal overlap unnecessary.
  
• Wire Clip: Locks into Link Channel and holds the tile in place.
  
  

BENEFITS

• Less overall weight makes slate practical on almost any Structure
  
• Reduces installation time and specialized labor needs
  
• Walkable with ceramic and stone slate
  
• Uses significantly less slate, reducing slate and freight Costs
  
• Very low maintenance
  
• A broken slate is replaced in minutes
  
• Fully tested, meets or exceeds ASTM E-108 Class A ICBO standard
  

Material Specifications

Link Channel:

• Material: AZ-55 Galvalume™
• Material thickness: 0.031 inches
  
• Material properties: Structural Grade, minimum 50 ksi yield
  
• Finish: 2-mil black automotive e-coat using PPG process after stamping
  
• Weight: 0.30 pounds per part
  

Batten:

• Material: AZ-55 Galvalume™
  
• Material thickness: 18-gauge
  
• Material properties: Commercial Grade, minimum 30 ksi yield
  
• Weight: 0.41 pounds per linear foot
  

Wire Clip:

• Material: 316 Stainless Steel Full Hard Rod
  
• Material thickness: 0.063 inches in diameter
  
• Finish: Black Oxide
  
• Weight: approximately 40 pounds per thousand parts
  

Ceramic Slate:

• Material: Vitrified ceramic
  
• Body thickness: 5/16-inch
  
• Dimensions: 15-3/4 x 15-3/4 inches square
  
• Porosity: 0.2%
  
• Installed weight: 4.6 pounds per square foot of coverage
  

Natural Vermont Slate

System Specifications:

• Installed weight: 560 pounds per 100 ft2 roofing square
  
• Slate exposure: 75%
  
• Slate head lap: 4 inches
  
• Batten Spacing: 12-inches (nominal)
  
• Link Channels: One per piece of slate
  
• Wire Clips: One per link channel
  

Results of U.S. Testing

Fire Resistance of System:

Under ASTM E-108: Passed the standard required for Class ‘A’

Installed Weight of System:

Under ICBO Acceptance Criteria for Clay and Concrete Roof Tiles, AC180 2002, and Section 3.1.4: Installed Weight determined as 5.6 pounds per square foot

Strength of Ceramic Slate:

Under ICBO Acceptance Criteria for Clay and Concrete Roof Tiles, AC180 2002, Section 3.1.2, UBD Standard 15-5, Slate strength determined as more than two times required standard

Water Absorption of Ceramic Slate:

Under ICBO Acceptance Criteria for Clay and Concrete Roof Tiles, AC180 2002, and Section 3.1.3: Water absorption determined to be 0.2%

Resistance to Freezing and Thawing of Ceramic Slate:

Under ICBO, Acceptance Criteria for Clay and Concrete Roof Tiles, AC180 2002, and Section 4.5: No breakage; no disintegration; 0% weight loss.

Warranty

Once a roof has been installed, and after it has been, first, accepted by the property owner and their architect if applicable, and second, certified as correctly installed by a licensed roofing contractor approved by nu-lok USA, then a certificate of 50-year warranty is issued by Nu-Lok Roofing Systems.

A two-year warranty is provided by nu-lok USA as part of the sales contract for each order. This is intended to provided protection for problems that might occur from the date of purchase, through shipment, while waiting on site for installation and up through installation acceptance.